A quick reminder - or perhaps a public service announcement for those unaware.
One of the clearest protections set forth in the US constitution is that which prevents unreasonable searches and seizures by law enforcement (found in the Forth Amendment).
The Supreme Court has repeatedly held that the home receives the highest level of Fourth Amendment protection, and thus the Amendment prevents law enforcement agencies from entering people's homes, in non-emergency situations, without a warrant supported by an oath of affirmation (and it is firmly established, by the Supreme Court, that that means a warrant issued by a judge or neutral magistrate - not by the law enforcement agency itself, which would obviously be entirely self defeating).
ICE have routinely run roughshod over this basic constitutional right, by illegally entering homes to make arrests and secure deportations.
That these illegal raids are ICE policy (and not "mere" widespread wrongdoing) was recently confirmed when whisteblowers, from within ICE, leaked a secret internal memo, which authorizes agents to illegally enter homes without a judicial warrant.
The fact that this memo was kept highly secret inside the agency only underscores how far it strays from established law. If ICE believed the practice was lawful, it wouldn’t need to hide it from the public or from the courts.
Law enforcement know full well that ICE's warrantless raids are illegal (because, of course, they are extremely aware of the need to obtain warrants as part of their own jobs).
Clearly, this isn't the only illegality in which ICE have engaged but its about as plain and obvious example there can be that ICE is operating - by policy - in a criminal and unconstitutional manner.
Law enforcement departments that "totally align" with ICE are aiding and abetting criminality.